希少な生殖系統構造変異は,小児固体腫瘍のリスクを増加させる
Riaz Gillani1,2,3,4, Ryan L Collins2,3,5, Jett Crowdis3
1Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
まとめ
希少な生殖系統構造変異 (SVs) は,特に大きな染色体異常を持つ男性において,小児がんのリスクを高めます. これらの遺伝的要因は 幼児期の癌の傾向に大きく寄与します
科学分野:
- 遺伝学
- 小児腫瘍学
- ガンゲノミクス
背景:
- 小児の固体腫瘍は子供の死亡の主な原因です.
- 細菌系構造変異 (SVs) は,がんの誘発因子としてますます認識されています.
研究 の 目的:
- 小児の頭蓋骨外固体腫瘍の危険因子としての生殖系構造変異 (SVs) の役割を調査する.
- 子供のがんリスクの増加に関連した特定のタイプのSVを特定する.
主な方法:
- 固体腫瘍を患った1765人の子供 943人の親と6665人の成人の対照群の ゲノム配列解析
- 大量の染色体異常と遺伝子の機能と調節への影響に焦点を当てた生殖系構造変異の分析.
主要な成果:
- 男性の子供では,大型生殖系SV (> 1メガベース) と固体腫瘍のリスクの増加との間に,性別によるバイアスが認められた.
- 神経芽細胞腫は最も大きな影響を及ぼし,超希少なSVは重要な遺伝子の機能喪失とクロマチンのドメインの破壊をもたらしました.
- 希少な生殖系VSは,小児がんの発生率の1. 1〜5. 6%を占めていると推定されています.
結論:
- ゲルムラインの構造的変異は,小児がんの傾向の重要な要素ですが,しばしば見過ごされています.
- これらの遺伝因子を理解することで リスクの評価を促し 子供のがんに対する新たな治療戦略を 導き出せます
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